/* =========================================================================
   光禾 LightUP — 官网样式
   一所专注英语读写的语言学校。暖白纸张、宋体标题、真实课堂影像。
   字体全部本地托管（assets/fonts），无任何外部 CDN，适合国内部署。
   ========================================================================= */

@font-face{font-family:"LU Serif SC";src:url(../fonts/lu-serif-sc-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"LU Serif SC";src:url(../fonts/lu-serif-sc-600.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Instrument Serif";src:url(../fonts/instrument-serif-400.woff2) format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Instrument Serif";src:url(../fonts/instrument-serif-400-italic.woff2) format("woff2");font-weight:400;font-style:italic;font-display:swap}

:root{
  /* 品牌色：取自光禾 logo 与校区绿墙 */
  --brand:      #62B31C;   /* 品牌草绿：按钮、色块、图形（配深色字） */
  --brand-2:    #4E9A14;   /* 按钮悬停 */
  --brand-ink:  #3D7D10;   /* 浅底上的绿色文字，对比度 ≥4.5 */
  --brand-tint: #E6F2D8;   /* 极浅绿底 */
  --forest:     #1F3A12;   /* 同色相深绿：深色区块与页脚 */
  --forest-2:   #2A4C19;
  --gold:       #FBC324;

  /* 中性 */
  --paper:   #F6F4EE;
  --paper-2: #EEEBE2;
  --white:   #FFFFFF;
  --ink:     #17201A;
  --ink-2:   #48514A;
  --ink-3:   #6B736C;
  --line:    rgba(23,32,26,.14);
  --line-2:  rgba(23,32,26,.08);

  /* 深色底上的文字 */
  --on-dark:   #EEF0E8;
  --on-dark-2: #B5C3B8;
  --line-dark: rgba(238,240,232,.18);

  --serif-cn: "LU Serif SC","Songti SC","STSong","Noto Serif SC","Source Han Serif SC",serif;
  --serif-en: "Instrument Serif","LU Serif SC","Songti SC",Georgia,serif;
  --sans: -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  --wrap: 1320px;
  --gutter: 40px;
  --section: 152px;
  --ease: cubic-bezier(.2,.7,.2,1);
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink-2);font-family:var(--sans);font-size:17px;line-height:1.8;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,figure,blockquote,ol,ul{margin:0}
ol,ul{padding:0;list-style:none}
::selection{background:var(--brand);color:var(--ink)}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--section) 0}
.section--paper2{background:var(--paper-2)}
.section--dark{background:var(--forest);color:var(--on-dark-2)}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;z-index:999}
.skip:focus{left:8px}

/* ---------- type ---------- */
.display,h1,h2,h3{font-family:var(--serif-cn);color:var(--ink);font-weight:400;letter-spacing:.01em;text-wrap:balance}
.lede,.row p,.founder p{text-wrap:pretty}
.section--dark h2,.section--dark h3{color:var(--on-dark)}
h1{font-size:clamp(46px,6.6vw,96px);line-height:1.1;letter-spacing:.02em}
h2{font-size:clamp(32px,3.9vw,56px);line-height:1.2}
h3{font-size:clamp(21px,1.7vw,25px);line-height:1.35;font-weight:600}
.en{font-family:var(--serif-en);font-style:italic;font-weight:400;letter-spacing:0}
.num{font-family:var(--serif-en);font-weight:400;font-style:normal;letter-spacing:-.01em;font-variant-numeric:lining-nums}

.eyebrow{display:flex;align-items:center;gap:12px;font-size:13px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--ink-3);font-weight:500;margin-bottom:28px}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);flex:none}
.section--dark .eyebrow{color:var(--on-dark-2)}
.section--dark .eyebrow::before{background:var(--brand)}

.lede{font-size:clamp(17px,1.25vw,19px);line-height:1.85;color:var(--ink-2);max-width:34em}
.section--dark .lede{color:var(--on-dark-2)}
.sub-en{display:block;font-size:clamp(20px,1.9vw,28px);color:var(--brand-ink);margin-top:14px;line-height:1.3}
.section--dark .sub-en{color:var(--brand)}

/* ---------- links & buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:12px;height:54px;padding:0 28px;border-radius:999px;font-size:16px;
  font-weight:500;letter-spacing:.02em;transition:background .25s,color .25s,border-color .25s;border:1px solid transparent;cursor:pointer}
.btn svg{width:16px;height:16px;transition:transform .3s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn--brand{background:var(--brand);color:var(--ink)}
.btn--brand:hover{background:var(--brand-2)}
.btn--dark{background:var(--forest);color:var(--paper)}
.btn--dark:hover{background:var(--forest-2)}
.btn--ink{background:var(--ink);color:var(--paper)}
.btn--ink:hover{background:#2C3A2F}
.btn--line-ink{border-color:rgba(23,32,26,.35);color:var(--ink)}
.btn--line-ink:hover{border-color:var(--ink)}
.btn--line{border-color:var(--line);color:var(--ink)}
.btn--line:hover{border-color:var(--ink)}
.btn--gold{background:var(--gold);color:#2B2205}
.btn--gold:hover{background:#F6C443}
.btn--ghost-light{border-color:var(--line-dark);color:var(--on-dark)}
.btn--ghost-light:hover{border-color:var(--on-dark)}

.link{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:500;padding-bottom:4px;
  background:linear-gradient(currentColor,currentColor) 0 100%/100% 1px no-repeat;transition:background-size .35s var(--ease)}
.link:hover{background-size:0 1px;background-position:100% 100%}
.link svg{width:15px;height:15px}
.section--dark .link{color:var(--on-dark)}

/* ---------- header ---------- */
.hdr{position:sticky;top:0;z-index:50;background:transparent;transition:background .3s,box-shadow .3s}
.hdr.is-scrolled{background:rgba(246,244,238,.9);backdrop-filter:blur(14px) saturate(160%);-webkit-backdrop-filter:blur(14px) saturate(160%);box-shadow:0 1px 0 var(--line-2)}
.hdr__in{display:flex;align-items:center;height:80px;max-width:1440px;margin:0 auto;padding:0 var(--gutter)}
.logo{display:flex;align-items:center;gap:12px;flex:none}
/* logo 取自品牌标准稿（灯泡 + 光禾 / LightUP 横版组合），矢量描摹 */
.logo{gap:14px;color:var(--ink)}
.logo__mark{height:44px;width:auto;display:block}
.logo__rule{width:1px;height:32px;background:var(--line)}
/* 文字与「菜单」同字体、同粗细、同颜色 */
.logo__text{display:flex;flex-direction:column;font-family:var(--sans);font-weight:400;color:inherit;line-height:1.15}
.logo__cn{font-size:20px;letter-spacing:.1em}
.logo__en{font-size:11.5px;letter-spacing:.06em;margin-top:3px}
.nav{display:flex;gap:6px;margin-left:auto;margin-right:28px}
.nav a{font-size:15px;color:var(--ink);padding:8px 14px;border-radius:999px;transition:background .2s}
.nav a:hover{background:rgba(23,32,26,.06)}
.nav a[aria-current="page"]{background:var(--brand-tint);color:var(--brand-ink)}
.sheet a.sheet__link[aria-current="page"]{color:var(--brand-ink)}
.hdr .btn{height:44px;padding:0 22px;font-size:15px}
.menu-btn{display:none;align-items:center;gap:10px;margin-left:auto;background:none;border:0;font:inherit;font-size:15px;color:var(--ink);cursor:pointer;padding:8px 0}
.menu-btn i{display:block;width:22px;height:1.5px;background:var(--ink);position:relative;transition:background .2s}
.menu-btn i::before,.menu-btn i::after{content:"";position:absolute;left:0;width:22px;height:1.5px;background:var(--ink);transition:transform .3s var(--ease)}
.menu-btn i::before{top:-7px}.menu-btn i::after{top:7px}
.menu-open .menu-btn i{background:transparent}
.menu-open .menu-btn i::before{transform:translateY(7px) rotate(45deg)}
.menu-open .menu-btn i::after{transform:translateY(-7px) rotate(-45deg)}

.sheet{position:fixed;inset:0;z-index:40;background:var(--paper);padding:110px var(--gutter) 40px;display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}
.menu-open .sheet{opacity:1;visibility:visible}
.sheet a.sheet__link{font-family:var(--serif-cn);font-size:32px;color:var(--ink);padding:14px 0;border-bottom:1px solid var(--line-2);display:flex;justify-content:space-between;align-items:baseline}
.sheet a.sheet__link span{font-family:var(--serif-en);font-style:italic;font-size:18px;color:var(--ink-3)}
.sheet .btn{margin-top:auto;justify-content:center}

/* ---------- hero ---------- */
.hero{padding:56px 0 0}
.hero__grid{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter);align-items:end}
.hero__copy{grid-column:1 / span 7;padding-bottom:12px}
.hero__media{grid-column:8 / span 5}
.hero h1 .en{display:block;font-size:.34em;line-height:1.3;color:var(--brand-ink);margin-top:26px;letter-spacing:0}
.hero .lede{margin-top:34px}
.hero__cta{display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center;margin-top:44px}
.photo{position:relative;overflow:hidden;border-radius:4px;background:var(--paper-2)}
.photo img{width:100%;height:100%;object-fit:cover}
.caption{display:flex;justify-content:space-between;gap:16px;font-size:13px;color:var(--ink-3);margin-top:14px;letter-spacing:.02em}
.section--dark .caption{color:var(--on-dark-2)}

.facts{display:grid;grid-template-columns:repeat(4,1fr);margin-top:96px;border-top:1px solid var(--line)}
.fact{padding:30px 28px 0 0}
.fact + .fact{padding-left:28px;border-left:1px solid var(--line)}
.fact .num{display:block;font-size:clamp(40px,4vw,58px);line-height:1;color:var(--ink)}
.fact p{font-size:14.5px;line-height:1.65;color:var(--ink-3);margin-top:14px;max-width:16em}

/* ---------- manifesto ---------- */
.manifesto{padding:var(--section) 0}
.manifesto__text{font-family:var(--serif-cn);font-size:clamp(26px,3vw,44px);line-height:1.62;color:var(--ink);max-width:23em;letter-spacing:.02em}
.manifesto__text .c{color:var(--ink);transition:color .2s linear}
.js .manifesto__text .c{color:rgba(23,32,26,.18)}
.js .manifesto__text .c.on{color:var(--ink)}
.manifesto__foot{display:flex;gap:36px;align-items:center;margin-top:56px;flex-wrap:wrap}
.manifesto__foot small{font-size:14px;color:var(--ink-3)}

/* ---------- path (curriculum chart) ---------- */
.split-head{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter);align-items:end;margin-bottom:72px}
.split-head > :first-child{grid-column:1 / span 6}
.split-head > :last-child{grid-column:8 / span 5}

.track{border-top:1px solid var(--line)}
.track__scale,.track__row{display:grid;grid-template-columns:240px repeat(13,1fr)}
.track__scale{font-size:12px;letter-spacing:.06em;color:var(--ink-3);padding:14px 0 10px;border-bottom:1px solid var(--line-2)}
.track__scale span{text-align:center}
.track__row{align-items:center;padding:20px 0;border-bottom:1px solid var(--line-2);background:
  repeating-linear-gradient(90deg,transparent 0,transparent calc((100% - 240px)/13 - 1px),var(--line-2) calc((100% - 240px)/13 - 1px),var(--line-2) calc((100% - 240px)/13)) 240px 0/calc(100% - 240px) 100% no-repeat}
.track__name{font-family:var(--serif-cn);font-weight:600;color:var(--ink);font-size:17px;line-height:1.4;padding-right:20px}
.track__name small{display:block;font-family:var(--sans);font-weight:400;font-size:13px;color:var(--ink-3);margin-top:2px}
.track__bar{height:10px;border-radius:999px;background:var(--c,var(--brand));position:relative}
.track__bar em{position:absolute;right:0;top:16px;font-style:normal;font-size:12px;color:var(--ink-3);white-space:nowrap}
.track__foot{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-top:40px;flex-wrap:wrap}
.track__foot p{font-size:14.5px;color:var(--ink-3)}

/* ---------- flagship ---------- */
.flag{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter);align-items:start}
.flag__media{grid-column:1 / span 5;position:sticky;top:120px}
.flag__body{grid-column:7 / span 6}
.flag__body h2 + .sub-en{margin-bottom:36px}
.ladder{margin:48px 0 0;border-top:1px solid var(--line)}
.ladder li{display:grid;grid-template-columns:56px 1fr auto;gap:20px;align-items:baseline;padding:20px 0;border-bottom:1px solid var(--line-2)}
.ladder .num{font-size:22px;color:var(--brand-ink)}
.ladder b{font-family:var(--serif-cn);font-weight:600;font-size:19px;color:var(--ink)}
.ladder span{font-size:14.5px;color:var(--ink-3);text-align:right}
.note{font-size:14px;line-height:1.75;color:var(--ink-3);margin-top:24px;padding-left:16px;border-left:2px solid var(--gold)}
.flag__cta{margin-top:44px}

/* ---------- student work ---------- */
.works{columns:3;column-gap:var(--gutter)}
.work{break-inside:avoid;margin:0 0 56px}
.work__mat{background:var(--white);padding:16px;border-radius:2px;box-shadow:0 1px 2px rgba(23,32,26,.06),0 18px 40px -22px rgba(23,32,26,.25);
  transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.work:hover .work__mat{transform:translateY(-6px) rotate(-.4deg);box-shadow:0 1px 2px rgba(23,32,26,.06),0 30px 60px -28px rgba(23,32,26,.32)}
.work figcaption{margin-top:20px}
.work figcaption .en{display:block;font-size:22px;color:var(--ink);line-height:1.3}
.work figcaption span{display:block;font-size:14px;color:var(--ink-3);margin-top:6px;line-height:1.6}

/* ---------- method (alternating rows) ---------- */
.rows{display:flex;flex-direction:column;gap:128px}
.row{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter);align-items:center}
.row__media{grid-column:1 / span 6}
.row__body{grid-column:8 / span 5}
.row--flip .row__media{grid-column:7 / span 6;order:2}
.row--flip .row__body{grid-column:1 / span 5;order:1}
.row__idx{display:flex;align-items:baseline;gap:16px;margin-bottom:20px}
.row__idx .num{font-size:20px;color:var(--brand-ink)}
.row__idx .en{font-size:20px;color:var(--ink-3)}
.row h3{font-size:clamp(26px,2.4vw,36px);font-weight:400;margin-bottom:24px}
.row p{color:var(--ink-2)}
.row ul{margin-top:28px;border-top:1px solid var(--line)}
.row li{padding:14px 0;border-bottom:1px solid var(--line-2);font-size:15px;color:var(--ink-2);display:flex;justify-content:space-between;gap:20px}
.row li .en{color:var(--ink-3);font-size:17px}

/* ---------- exams (dark) ---------- */
.exam{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter)}
.exam__intro{grid-column:1 / span 4}
.exam__intro .photo{margin-top:56px}
.exam__list{grid-column:6 / span 7;border-top:1px solid var(--line-dark)}
.exam__item{display:grid;grid-template-columns:minmax(150px,1fr) 2fr 24px;gap:28px;padding:30px 0;border-bottom:1px solid var(--line-dark);align-items:start;transition:padding .35s var(--ease)}
.exam__item:hover{padding-left:12px}
.exam__item h3{font-weight:400;font-size:26px;line-height:1.25}
.exam__item h3 .en{display:block;font-size:17px;color:var(--on-dark-2);margin-top:4px}
.exam__item p{font-size:15px;line-height:1.75;color:var(--on-dark-2)}
.exam__item p b{color:var(--on-dark);font-weight:500}
.exam__item svg{width:18px;height:18px;color:var(--on-dark-2);margin-top:8px;transition:transform .3s var(--ease),color .3s}
.exam__item:hover svg{transform:translateX(4px);color:var(--gold)}
.tag{display:inline-block;font-size:12px;letter-spacing:.06em;padding:3px 10px;border-radius:999px;border:1px solid currentColor;margin-left:10px;vertical-align:4px;font-family:var(--sans);font-style:normal}
.tag--gold{color:var(--gold)}
.pillars{display:flex;flex-wrap:wrap;gap:8px 10px;margin-top:28px}
.pillars span{font-size:13.5px;color:var(--on-dark);border:1px solid var(--line-dark);border-radius:999px;padding:5px 14px}

/* ---------- stories ---------- */
.stories{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.story{background:var(--white);border-radius:4px;padding:32px 28px 30px;display:flex;flex-direction:column}
.story__top{display:flex;gap:16px;align-items:center;padding-bottom:22px;border-bottom:1px solid var(--line-2)}
.mono{width:56px;height:56px;border-radius:50%;flex:none;display:grid;place-items:center;background:var(--brand-tint);
  font-family:var(--serif-en);font-size:28px;color:var(--brand-ink)}
.story__top b{display:block;font-family:var(--serif-en);font-weight:400;font-size:26px;color:var(--ink);line-height:1.1}
.story__top small{font-size:13px;color:var(--ink-3)}
.story ol{margin:22px 0 0;position:relative;flex:1}
.story ol::before{content:"";position:absolute;left:3px;top:8px;bottom:8px;width:1px;background:var(--line)}
.story li{position:relative;padding:0 0 12px 22px;font-size:14px;line-height:1.55;color:var(--ink-2)}
.story li::before{content:"";position:absolute;left:0;top:7px;width:7px;height:7px;border-radius:50%;background:var(--paper);border:1px solid var(--ink-3)}
.story li time{display:block;font-size:12px;color:var(--ink-3);letter-spacing:.04em}
.story__out{margin-top:16px;padding-top:20px;border-top:1px solid var(--line-2)}
.story__out b{display:block;font-family:var(--serif-cn);font-weight:600;font-size:18px;color:var(--forest);line-height:1.5}
.story__out span{display:block;font-size:13px;color:var(--ink-3);margin-top:4px}
.alumni-line{margin-top:56px;font-size:15px;color:var(--ink-3);text-align:center}
.alumni-line .en{font-size:19px;color:var(--ink-2)}

/* ---------- faculty ---------- */
.founders{display:grid;grid-template-columns:1fr 1fr;gap:var(--gutter);margin-bottom:96px}
.founder{display:grid;grid-template-columns:5fr 6fr;gap:32px;align-items:end}
.founder .photo{aspect-ratio:4/5}
.founder h3{font-size:30px;font-weight:400}
.founder h3 small{display:block;font-family:var(--sans);font-size:13px;letter-spacing:.14em;color:var(--brand-ink);margin-bottom:10px;text-transform:uppercase}
.founder p{font-size:15px;line-height:1.8;margin-top:18px;color:var(--ink-2)}
.team{display:grid;grid-template-columns:repeat(5,1fr);gap:48px var(--gutter)}
.member .photo{aspect-ratio:4/5}
.member .photo img,.founder .photo img{filter:grayscale(1) sepia(.12) contrast(1.03);transition:filter .6s var(--ease),transform .9s var(--ease)}
.member:hover .photo img,.founder:hover .photo img{filter:none;transform:scale(1.03)}
.member b{display:block;font-family:var(--serif-en);font-weight:400;font-size:24px;color:var(--ink);margin-top:18px;line-height:1.1}
.member span{display:block;font-size:14px;color:var(--ink-3);margin-top:6px;line-height:1.5}

/* ---------- start here ---------- */
.starts{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.start{border-radius:4px;padding:40px 36px 36px;display:flex;flex-direction:column;min-height:340px;background:var(--white);transition:transform .4s var(--ease)}
.start:hover{transform:translateY(-4px)}
.start--dark{background:var(--forest);color:var(--on-dark-2)}
.start--dark h3,.start--dark .link{color:var(--on-dark)}
.start .en{font-size:19px;color:var(--brand-ink);margin-bottom:22px}
.start--dark .en{color:var(--brand)}
.start h3{font-size:28px;font-weight:400}
.start p{font-size:15px;line-height:1.75;margin-top:16px;flex:1}
.start .link{margin-top:28px;align-self:flex-start}

.journal{margin-top:120px;display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter)}
.journal__head{grid-column:1 / span 4}
.journal__list{grid-column:6 / span 7;border-top:1px solid var(--line)}
.journal__list a{display:grid;grid-template-columns:150px 1fr 20px;gap:24px;padding:24px 0;border-bottom:1px solid var(--line-2);align-items:baseline}
.journal__list small{font-size:13px;color:var(--ink-3);letter-spacing:.04em}
.journal__list span{font-family:var(--serif-cn);font-size:19px;color:var(--ink);line-height:1.5;transition:color .2s}
.journal__list a:hover span{color:var(--brand-ink)}
.journal__list svg{width:16px;height:16px;color:var(--ink-3)}

/* ---------- closing ---------- */
.band-photo{aspect-ratio:21/8;max-height:620px;width:100%}
.band-photo img{width:100%;height:100%;object-fit:cover;object-position:50% 55%}
.closing{background:var(--brand);color:var(--ink);padding:128px 0 120px}
.closing__grid{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter);align-items:end}
.closing__grid > div:first-child{grid-column:1 / span 7}
.closing__grid > div:last-child{grid-column:9 / span 4}
.closing h2{color:var(--ink);font-size:clamp(40px,5vw,76px);line-height:1.15}
.closing .en{display:block;color:var(--forest);font-size:clamp(20px,2vw,30px);margin-top:20px}
.closing p.lede{color:rgba(23,32,26,.82);margin-top:24px}
.closing__qr{display:flex;gap:18px;align-items:center;margin-top:8px;font-size:14px;line-height:1.6}
.closing__qr img{width:104px;height:104px;background:#fff;padding:6px;border-radius:4px;flex:none}
.closing__cta{display:flex;flex-direction:column;gap:14px}
.closing__cta .btn{justify-content:space-between}

.ftr{background:var(--forest);color:var(--on-dark-2);padding:80px 0 40px;font-size:14.5px}
.ftr__grid{display:grid;grid-template-columns:repeat(12,1fr);gap:40px var(--gutter)}
.ftr__brand{grid-column:1 / span 4}
.ftr__brand .logo{color:var(--on-dark)}
.ftr__brand .logo__rule{background:var(--line-dark)}
.ftr__brand p{margin-top:22px;max-width:22em;line-height:1.8}
.ftr__col{grid-column:span 2}
.ftr__col h4{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--on-dark);font-weight:500;margin-bottom:18px}
.ftr__col li{margin-bottom:10px}
.ftr__col a:hover{color:var(--on-dark)}
.qrs{grid-column:9 / span 4;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.qrs figure{text-align:center}
.qrs img{background:#fff;padding:6px;border-radius:4px;width:100%;aspect-ratio:1}
.qrs figcaption{font-size:12.5px;margin-top:10px;line-height:1.4}
.ftr__legal{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:72px;padding-top:28px;border-top:1px solid var(--line-dark);font-size:13px}
.ftr__legal a:hover{color:var(--on-dark)}

/* ---------- reveal ---------- */
.js .rv{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .rv.in{opacity:1;transform:none}
.js .rv[data-d="1"]{transition-delay:.06s}.js .rv[data-d="2"]{transition-delay:.12s}.js .rv[data-d="3"]{transition-delay:.18s}
@media (prefers-reduced-motion:reduce){
  .js .rv{opacity:1;transform:none;transition:none}
  .js .manifesto__text .c{color:var(--ink)}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  :root{--gutter:32px;--section:120px}
  .nav{display:none}
  .menu-btn{display:flex;margin-left:24px}
  .hdr .btn{margin-left:auto}
  .team{grid-template-columns:repeat(4,1fr)}
  .stories{grid-template-columns:repeat(2,1fr)}
  .founder{grid-template-columns:1fr;align-items:start}
  .founder .photo{max-width:320px}
}
@media (max-width:900px){
  :root{--gutter:24px;--section:96px}
  .hero__copy,.hero__media,.split-head > :first-child,.split-head > :last-child,.flag__media,.flag__body,
  .row__media,.row__body,.row--flip .row__media,.row--flip .row__body,.exam__intro,.exam__list,
  .journal__head,.journal__list,.closing__grid > div:first-child,.closing__grid > div:last-child,.ftr__brand,.qrs{grid-column:1 / -1}
  .hero__media{margin-top:56px}
  .facts{grid-template-columns:repeat(2,1fr);margin-top:72px}
  .fact:nth-child(3){padding-left:0;border-left:0}
  .fact:nth-child(n+3){border-top:1px solid var(--line);margin-top:30px}
  .split-head{margin-bottom:48px}
  .split-head > :last-child{margin-top:24px}
  .track__scale{display:none}
  .track__row{grid-template-columns:1fr;background:none;gap:10px}
  .track__bar{display:none}
  .track__name small{display:inline;margin-left:10px}
  .flag__media{position:static;margin-bottom:48px}
  .works{columns:2}
  .rows{gap:88px}
  .row--flip .row__media{order:0}
  .row__media{margin-bottom:36px}
  .exam__list{margin-top:56px}
  .exam__intro .photo{display:none}
  .founders{grid-template-columns:1fr;gap:64px;margin-bottom:72px}
  .founder{grid-template-columns:2fr 3fr;align-items:end}
  .team{grid-template-columns:repeat(3,1fr);gap:40px 20px}
  .starts{grid-template-columns:1fr}
  .start{min-height:0}
  .journal{margin-top:88px}
  .journal__list{margin-top:32px}
  .closing__grid > div:last-child{margin-top:48px}
  .ftr__col{grid-column:span 4}
  .qrs{max-width:420px}
  .band-photo{aspect-ratio:4/3}
}
@media (max-width:600px){
  body{font-size:16px}
  :root{--gutter:20px;--section:80px}
  .hdr__in{height:68px}
  .hdr .btn{display:none}
  .menu-btn{margin-left:auto}
  .logo__mark{height:38px}
  .logo__rule{height:26px}
  .logo__cn{font-size:18px}
  .logo__en{font-size:10.5px}
  .hero{padding-top:32px}
  .hero__cta .btn{width:100%;justify-content:space-between}
  .fact{padding-right:12px}
  .fact + .fact{padding-left:16px}
  .fact:nth-child(3){padding-left:0}
  .works{columns:1}
  .work{margin-bottom:44px}
  .exam__item{grid-template-columns:1fr 18px;gap:12px 16px}
  .exam__item p{grid-column:1 / -1;grid-row:2}
  .exam__item svg{grid-column:2;grid-row:1}
  .stories{grid-template-columns:1fr}
  .founder{grid-template-columns:1fr}
  .founder .photo{max-width:none}
  .team{grid-template-columns:repeat(2,1fr)}
  .member b{font-size:21px}
  .journal__list a{grid-template-columns:1fr 16px;gap:6px 16px}
  .journal__list small{grid-column:1 / -1}
  .ftr__col{grid-column:span 6}
  .qrs{grid-column:1 / -1}
}

/* =========================================================================
   子页面组件
   ========================================================================= */
.page-hero{padding:64px 0 96px}
.page-hero h1{font-size:clamp(40px,5.4vw,78px);line-height:1.14;max-width:13em}
.page-hero h1 .en{display:block;font-size:.36em;line-height:1.3;color:var(--brand-ink);margin-top:22px}
.page-hero .lede{margin-top:32px;max-width:38em}
.page-hero__grid{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter);align-items:end}
.page-hero__grid > :first-child{grid-column:1 / span 7}
.page-hero__grid > :last-child{grid-column:9 / span 4}

/* 锚点导航 */
.subnav{position:sticky;top:80px;z-index:30;background:rgba(246,244,238,.94);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.subnav__in{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;max-width:var(--wrap);margin:0 auto;padding:10px var(--gutter)}
.subnav__in::-webkit-scrollbar{display:none}
.subnav a{flex:none;font-size:14.5px;color:var(--ink-2);padding:7px 14px;border-radius:999px;white-space:nowrap;transition:background .2s,color .2s}
.subnav a:hover{background:rgba(23,32,26,.06);color:var(--ink)}
.subnav a.is-active{background:var(--brand-tint);color:var(--brand-ink)}
.anchor{scroll-margin-top:150px}

/* 课程区块头 */
.prog{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter);align-items:start}
.prog__main{grid-column:1 / span 7}
.prog__side{grid-column:9 / span 4}
.prog__main h2 + .sub-en{margin-bottom:32px}
.prog__main .lede + .lede{margin-top:18px}
.meta{border-top:1px solid var(--line)}
.meta div{display:grid;grid-template-columns:88px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line-2);font-size:15px;line-height:1.7}
.meta dt{color:var(--ink-3);font-size:13.5px;padding-top:2px}
.meta dd{margin:0;color:var(--ink)}
.section--dark .meta{border-color:var(--line-dark)}
.section--dark .meta div{border-color:var(--line-dark)}
.section--dark .meta dt{color:var(--on-dark-2)}
.section--dark .meta dd{color:var(--on-dark)}
.prog__side .link{margin-top:28px}

/* 小标题 */
.h-sub{font-family:var(--serif-cn);font-weight:600;font-size:21px;color:var(--ink);margin:80px 0 28px;display:flex;align-items:baseline;gap:14px}
.h-sub .en{font-weight:400;font-size:18px;color:var(--ink-3)}
.section--dark .h-sub{color:var(--on-dark)}
.section--dark .h-sub .en{color:var(--on-dark-2)}

/* 特性网格 */
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:0 var(--gutter)}
.feats--4{grid-template-columns:repeat(4,1fr)}
.feats--2{grid-template-columns:repeat(2,1fr)}
.feats--5{grid-template-columns:repeat(5,1fr)}
.feat{border-top:1px solid var(--line);padding:24px 0 36px}
.feat .num{font-size:18px;color:var(--brand-ink)}
.feat h4{font-family:var(--serif-cn);font-weight:600;font-size:19px;color:var(--ink);margin:10px 0 10px;line-height:1.4}
.feat h4 .en{display:block;font-family:var(--serif-en);font-weight:400;font-size:16px;color:var(--ink-3);margin-top:2px}
.feat p{font-size:15px;line-height:1.75;color:var(--ink-2)}
.feat ul{margin-top:10px}
.feat li{font-size:14.5px;color:var(--ink-2);padding:3px 0 3px 16px;position:relative}
.feat li::before{content:"";position:absolute;left:0;top:13px;width:6px;height:1px;background:var(--ink-3)}
.section--dark .feat{border-color:var(--line-dark)}
.section--dark .feat h4{color:var(--on-dark)}
.section--dark .feat h4 .en,.section--dark .feat .num{color:var(--brand)}
.section--dark .feat p,.section--dark .feat li{color:var(--on-dark-2)}

/* 表格 */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.table{width:100%;border-collapse:collapse;font-size:15px;min-width:620px}
.table th{text-align:left;font-weight:500;font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);padding:0 20px 14px 0;border-bottom:1px solid var(--line)}
.table td{padding:20px 20px 20px 0;border-bottom:1px solid var(--line-2);vertical-align:top;line-height:1.65;color:var(--ink-2)}
.table td:first-child{font-family:var(--serif-cn);font-weight:600;color:var(--ink);font-size:17px;white-space:nowrap}
.table td b{color:var(--ink);font-weight:500}
.section--dark .table th{color:var(--on-dark-2);border-color:var(--line-dark)}
.section--dark .table td{border-color:var(--line-dark);color:var(--on-dark-2)}
.section--dark .table td:first-child,.section--dark .table td b{color:var(--on-dark)}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(var(--n,6),1fr);gap:0;counter-reset:s;border-top:1px solid var(--line)}
.steps li{position:relative;padding:26px 20px 0 0}
.steps li::before{content:"";position:absolute;top:-5px;left:0;width:9px;height:9px;border-radius:50%;background:var(--brand)}
.steps .num{display:block;font-size:15px;color:var(--brand-ink);letter-spacing:.04em}
.steps b{display:block;font-family:var(--serif-cn);font-weight:600;font-size:18px;color:var(--ink);margin:8px 0 6px}
.steps p{font-size:14px;line-height:1.7;color:var(--ink-3)}
.section--dark .steps{border-color:var(--line-dark)}
.section--dark .steps b{color:var(--on-dark)}
.section--dark .steps p{color:var(--on-dark-2)}
.section--dark .steps .num{color:var(--brand)}

/* 提示框 */
.callout{background:var(--brand-tint);border-radius:4px;padding:26px 30px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.callout b{color:var(--ink);font-weight:600}
.callout--gold{background:#FDF3D3}

/* 问答 */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line-2)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:24px;padding:22px 0;
  font-family:var(--serif-cn);font-size:19px;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";width:12px;height:12px;flex:none;border-right:1.5px solid var(--ink-3);border-bottom:1.5px solid var(--ink-3);transform:rotate(45deg) translate(-3px,-3px);transition:transform .3s var(--ease)}
.faq details[open] summary::after{transform:rotate(-135deg) translate(-3px,-3px)}
.faq details p{padding:0 0 24px;font-size:15.5px;line-height:1.85;color:var(--ink-2);max-width:46em}

/* 提要列表（两列对照） */
.pair{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.pair > div{background:var(--white);border-radius:4px;padding:32px}
.pair h4{font-family:var(--serif-cn);font-weight:600;font-size:20px;color:var(--ink)}
.pair h4 small{display:block;font-family:var(--sans);font-weight:400;font-size:13px;color:var(--ink-3);margin-top:4px}
.pair p{font-size:15px;line-height:1.75;margin-top:14px}
.pair .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.pair .tags span{font-size:13.5px;padding:4px 12px;border-radius:999px;background:var(--paper);color:var(--ink-2)}

/* 小图文并排 */
.duo{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter);align-items:center}
.duo > :first-child{grid-column:1 / span 6}
.duo > :last-child{grid-column:8 / span 5}
.duo--flip > :first-child{grid-column:7 / span 6;order:2}
.duo--flip > :last-child{grid-column:1 / span 5;order:1}

/* 页内分隔 */
.divide{height:1px;background:var(--line);margin:0}

@media (max-width:1180px){
  .subnav{top:80px}
  .feats--4{grid-template-columns:repeat(2,1fr)}
  .feats--5{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:900px){
  .page-hero{padding:40px 0 72px}
  .page-hero__grid > :first-child,.page-hero__grid > :last-child,.prog__main,.prog__side,
  .duo > :first-child,.duo > :last-child,.duo--flip > :first-child,.duo--flip > :last-child{grid-column:1 / -1}
  .page-hero__grid > :last-child{margin-top:40px}
  .prog__side{margin-top:44px}
  .duo--flip > :first-child{order:0}
  .duo > :first-child{margin-bottom:36px}
  .feats,.feats--2{grid-template-columns:1fr}
  .feats--4,.feats--5{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr;row-gap:32px;border-top:0}
  .steps li{border-top:1px solid var(--line)}
  .section--dark .steps li{border-color:var(--line-dark)}
  .pair{grid-template-columns:1fr}
  .h-sub{margin-top:64px}
}
@media (max-width:600px){
  .subnav{top:68px}
  .anchor{scroll-margin-top:130px}
  .feats--4,.feats--5{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .meta div{grid-template-columns:72px 1fr}
  .pair > div{padding:26px 22px}
  .callout{padding:22px}
}

/* ---------- 测评 ---------- */
.quiz-wrap{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter);align-items:start}
.quiz-wrap > aside{grid-column:1 / span 4;position:sticky;top:120px}
.quiz{grid-column:6 / span 7;background:var(--white);border-radius:6px;padding:48px 52px;min-height:520px;scroll-margin-top:110px}
.quiz__sec{display:block;font-size:13px;letter-spacing:.14em;color:var(--ink-3);text-transform:uppercase}
.quiz__title{font-size:34px;font-weight:400;margin:18px 0 18px}
.quiz__lead{color:var(--ink-2);margin-bottom:36px;max-width:34em}
.quiz__head{margin-bottom:36px}
.quiz__bar{height:4px;background:var(--paper-2);border-radius:999px;overflow:hidden;margin-top:14px}
.quiz__bar i{display:block;height:100%;background:var(--brand);border-radius:999px;transition:width .5s var(--ease)}
.quiz__passage{background:var(--paper);border-radius:4px;padding:24px 28px;margin-bottom:28px;font-family:var(--serif-en);font-size:19px;line-height:1.65;color:var(--ink)}
.quiz__passage p + p{margin-top:12px}
.quiz__plabel{display:block;font-family:var(--sans);font-size:13px;color:var(--ink-3);margin-bottom:10px}
.quiz__q{font-family:var(--serif-en);font-size:24px;line-height:1.45;color:var(--ink);margin-bottom:28px}
.quiz__q b{font-weight:400;font-style:italic;color:var(--brand-ink)}
.quiz__opts{display:flex;flex-direction:column;gap:10px}
.opt{display:flex;align-items:center;gap:16px;width:100%;text-align:left;font:inherit;font-size:16.5px;line-height:1.5;color:var(--ink);
  background:var(--white);border:1px solid var(--line);border-radius:6px;padding:14px 18px;cursor:pointer;transition:border-color .2s,background .2s}
.opt span{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:13px;border:1px solid var(--line);color:var(--ink-3);transition:.2s}
.opt:hover{border-color:var(--ink-3)}
.opt.is-on{border-color:var(--brand);background:var(--brand-tint)}
.opt.is-on span{background:var(--brand);border-color:var(--brand);color:var(--ink)}
.quiz__nav{display:flex;justify-content:space-between;align-items:center;margin-top:36px}
.quiz__nav .btn[disabled]{opacity:.4;cursor:not-allowed}
.quiz__back{background:none;border:0;font:inherit;cursor:pointer}
.quiz__back[disabled]{opacity:0;pointer-events:none}
button.link{background-color:transparent;border:0;font:inherit;font-weight:500;cursor:pointer;padding:0 0 4px}
.quiz__score{display:flex;align-items:baseline;gap:10px;margin:14px 0 28px}
.quiz__score .num{font-size:96px;line-height:1;color:var(--ink)}
.quiz__score span{font-size:22px;color:var(--ink-3)}
.quiz__parts{display:flex;flex-direction:column;gap:14px;padding:24px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.quiz__parts > div{display:grid;grid-template-columns:48px 1fr 56px;gap:16px;align-items:center;font-size:14.5px}
.quiz__parts .quiz__bar{margin:0}
.quiz__parts b{font-weight:500;color:var(--ink);text-align:right}
.quiz__rec{margin-top:32px}
.quiz__rec .en{color:var(--brand-ink);font-size:19px}
.quiz__rec h3{font-size:28px;font-weight:400;margin:8px 0 14px}
.quiz__rec p{font-size:15.5px;line-height:1.8}
.quiz__note{color:var(--ink-3);font-size:13.5px !important;margin-top:12px}
.quiz__actions{display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center;margin-top:28px}
.quiz__review{margin-top:40px;border-top:1px solid var(--line)}
.quiz__review summary{cursor:pointer;padding:20px 0;font-weight:500;color:var(--ink)}
.rv-item{padding:16px 0;border-top:1px solid var(--line-2);font-size:14.5px;line-height:1.7}
.rv-q{color:var(--ink)}
.rv-a{margin-top:4px;color:var(--ink-2)}
.rv-item.ok .rv-a{color:var(--brand-ink)}
.rv-item.no .rv-a{color:#A3471F}
.rv-e{color:var(--ink-3);margin-top:2px}

/* 预约试听 */
.trial{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter);align-items:center}
.trial > :first-child{grid-column:1 / span 6}
.trial > :last-child{grid-column:8 / span 5}
.qr-card{background:var(--white);border-radius:6px;padding:36px;display:flex;gap:28px;align-items:center}
.qr-card img{width:168px;height:168px;flex:none}
.qr-card b{display:block;font-family:var(--serif-cn);font-weight:600;font-size:21px;color:var(--ink);margin-bottom:8px}
.qr-card p{font-size:14.5px;line-height:1.75;color:var(--ink-2)}

@media (max-width:900px){
  .quiz-wrap > aside,.quiz,.trial > :first-child,.trial > :last-child{grid-column:1 / -1}
  .quiz-wrap > aside{position:static;margin-bottom:40px}
  .trial > :last-child{margin-top:48px}
}
@media (max-width:600px){
  .quiz{padding:30px 22px;min-height:0}
  .quiz__q{font-size:21px}
  .quiz__passage{font-size:17px;padding:20px}
  .qr-card{flex-direction:column;align-items:flex-start;padding:28px}
}

/* ---------- 教材陈列 ---------- */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:48px}
.filters button{font:inherit;font-size:14.5px;color:var(--ink-2);background:transparent;border:1px solid var(--line);border-radius:999px;padding:8px 16px;cursor:pointer;transition:.2s}
.filters button span{color:var(--ink-3);margin-left:4px;font-size:13px}
.filters button:hover{border-color:var(--ink-3)}
.filters button.is-on{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.filters button.is-on span{color:rgba(246,244,238,.65)}
.shelf{display:grid;grid-template-columns:repeat(6,1fr);gap:44px 28px;align-items:start}
.book{margin:0}
.book[hidden]{display:none}
.book__cover{border-radius:2px;overflow:hidden;box-shadow:0 1px 2px rgba(23,32,26,.08),0 16px 32px -18px rgba(23,32,26,.35);transition:transform .5s var(--ease),box-shadow .5s var(--ease);background:var(--white)}
.book:hover .book__cover{transform:translateY(-6px);box-shadow:0 1px 2px rgba(23,32,26,.08),0 26px 44px -22px rgba(23,32,26,.42)}
.book img{width:100%;height:auto}
.book figcaption{margin-top:14px}
.book b{display:block;font-family:var(--serif-cn);font-weight:600;font-size:14.5px;line-height:1.5;color:var(--ink)}
.book span{display:block;font-size:12.5px;color:var(--ink-3);margin-top:3px;line-height:1.45}

/* ---------- 外链列表 ---------- */
.ext{display:grid;grid-template-columns:1fr 1fr;gap:0 var(--gutter);border-top:1px solid var(--line)}
.ext a{display:grid;grid-template-columns:1fr auto 18px;grid-template-rows:auto auto;gap:4px 16px;padding:24px 0;border-bottom:1px solid var(--line-2);align-items:baseline}
.ext b{font-family:var(--serif-cn);font-weight:600;font-size:19px;color:var(--ink);transition:color .2s}
.ext span{grid-column:1;grid-row:2;font-size:14.5px;color:var(--ink-3)}
.ext em{grid-column:2;grid-row:1;font-style:normal;font-size:12.5px;color:var(--ink-3);letter-spacing:.02em}
.ext svg{grid-column:3;grid-row:1;width:16px;height:16px;color:var(--ink-3);transition:transform .3s var(--ease),color .2s}
.ext a:hover b{color:var(--brand-ink)}
.ext a:hover svg{transform:translate(2px,-2px);color:var(--brand-ink)}

@media (max-width:1180px){.shelf{grid-template-columns:repeat(5,1fr)}}
@media (max-width:900px){.shelf{grid-template-columns:repeat(4,1fr);gap:36px 20px}.ext{grid-template-columns:1fr}}
@media (max-width:600px){.shelf{grid-template-columns:repeat(2,1fr);gap:32px 18px}.ext em{display:none}}

/* ---------- 读写志 ---------- */
.guides{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.guides a{background:var(--white);border-radius:4px;padding:30px 28px;display:flex;flex-direction:column;min-height:220px;transition:transform .4s var(--ease)}
.guides a:hover{transform:translateY(-4px)}
.guides .en{color:var(--brand-ink);font-size:18px}
.guides b{font-family:var(--serif-cn);font-weight:400;font-size:24px;line-height:1.35;color:var(--ink);margin-top:12px;flex:1}
.guides em{font-style:normal;font-size:14px;color:var(--ink-3);margin-top:20px}
.col{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter);padding:56px 0;border-top:1px solid var(--line)}
.col[hidden]{display:none}
.col__head{grid-column:1 / span 4}
.col__head h2{font-size:clamp(26px,2.4vw,34px)}
.col__head .en{display:block;font-size:18px;color:var(--ink-3);margin-top:6px}
.col__head p{font-size:14.5px;color:var(--ink-3);margin-top:14px;max-width:20em;line-height:1.7}
.col__list{grid-column:6 / span 7}
.col__list a{display:grid;grid-template-columns:1fr 16px;gap:20px;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--line-2)}
.col__list li:first-child a{padding-top:4px}
.col__list span{font-family:var(--serif-cn);font-size:18px;line-height:1.55;color:var(--ink);transition:color .2s}
.col__list svg{width:15px;height:15px;color:var(--ink-3);transition:transform .3s var(--ease),color .2s}
.col__list a:hover span{color:var(--brand-ink)}
.col__list a:hover svg{transform:translate(2px,-2px);color:var(--brand-ink)}
.col--compact .col__list{display:grid;grid-template-columns:repeat(3,1fr);gap:0 24px;align-content:start}
.col--compact .col__list span{font-size:16px}
@media (max-width:1180px){.guides{grid-template-columns:repeat(2,1fr)}}
@media (max-width:900px){
  .col__head,.col__list{grid-column:1 / -1}
  .col__list{margin-top:28px}
  .col--compact .col__list{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:600px){.guides{grid-template-columns:1fr}.guides a{min-height:0}}

/* ---------- 关于 ---------- */
.timeline{border-top:1px solid var(--line)}
.timeline li{display:grid;grid-template-columns:repeat(12,1fr);gap:0 var(--gutter);padding:36px 0;border-bottom:1px solid var(--line-2);align-items:baseline}
.timeline .num{grid-column:1 / span 4;font-size:clamp(40px,4.4vw,64px);line-height:1;color:var(--ink)}
.timeline li > div{grid-column:6 / span 7}
.timeline b{display:block;font-family:var(--serif-cn);font-weight:600;font-size:22px;color:var(--ink)}
.timeline p{margin-top:10px;color:var(--ink-2);max-width:36em}
.mosaic{display:grid;grid-template-columns:repeat(12,1fr);gap:56px var(--gutter);align-items:start}
.mosaic figure{margin:0}
.mosaic .photo img{aspect-ratio:auto}
.m-a{grid-column:1 / span 7}.m-a .photo{aspect-ratio:4/3}
.m-b{grid-column:9 / span 4;margin-top:120px}.m-b .photo{aspect-ratio:4/5}
.m-c{grid-column:2 / span 5}.m-c .photo{aspect-ratio:4/3}
.m-d{grid-column:8 / span 5;margin-top:-40px}.m-d .photo{aspect-ratio:4/3}
.m-e{grid-column:3 / span 8}.m-e .photo{aspect-ratio:16/9}
@media (max-width:900px){
  .timeline .num,.timeline li > div{grid-column:1 / -1}
  .timeline li > div{margin-top:16px}
  .mosaic{gap:40px 16px}
  .m-a,.m-b,.m-c,.m-d,.m-e{grid-column:1 / -1;margin-top:0}
  .m-b,.m-c{grid-column:span 6}
}
@media (max-width:600px){.m-b,.m-c{grid-column:1 / -1}}
.col__list a{grid-template-columns:1fr auto 16px}
.col__list time{font-size:12.5px;color:var(--ink-3);letter-spacing:.02em}
.col__list a:not(:has(time)) span{grid-column:1 / 3}

/* ---------- 文章页 ---------- */
.post__hero{background:var(--paper-2);border-bottom:1px solid var(--line-2)}
.post__hero-in,.post__layout{display:grid;grid-template-columns:200px minmax(0,760px);column-gap:72px;justify-content:center}
.post__hero-in > *{grid-column:2}
.post__hero-in{padding-top:56px;padding-bottom:64px}
.crumbs{display:flex;gap:10px;font-size:13.5px;color:var(--ink-3);margin-bottom:36px}
.crumbs a:hover{color:var(--brand-ink)}
.post__hero h1{font-size:clamp(34px,4.4vw,60px);line-height:1.18;word-break:keep-all;overflow-wrap:anywhere}
.post__desc{font-size:17px;line-height:1.85;color:var(--ink-2);margin-top:22px;max-width:40em}
.post__meta{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center;margin-top:26px;font-size:14px;color:var(--ink-3)}
.post__meta .link{font-size:14px}
.post__layout{padding-top:56px;padding-bottom:40px}
.post__toc{position:sticky;top:112px;align-self:start;max-height:calc(100vh - 140px);overflow:auto;padding-right:4px}
.post__toc p{font-size:12px;letter-spacing:.16em;color:var(--ink-3);margin-bottom:14px}
.post__toc ol,.post__toc-m ol{border-left:1px solid var(--line)}
.post__toc a,.post__toc-m a{display:flex;gap:10px;padding:7px 0 7px 14px;margin-left:-1px;border-left:2px solid transparent;font-size:13.5px;line-height:1.5;color:var(--ink-3);transition:color .2s,border-color .2s}
.post__toc a .num,.post__toc-m a .num{font-size:13px;color:var(--ink-3);flex:none;width:18px}
.post__toc a:hover{color:var(--ink)}
.post__toc a.is-active{color:var(--ink);border-left-color:var(--brand)}
.post__toc a.is-active .num{color:var(--brand-ink)}
.post__toc-m{display:none}
.post__main{min-width:0}
.post__kp{background:var(--white);border-radius:6px;padding:26px 30px;border-left:3px solid var(--brand)}
.post__kp-t{font-size:12px;letter-spacing:.16em;color:var(--brand-ink);font-weight:600;margin-bottom:10px}
.post__kp ul{counter-reset:k}
.post__kp li{counter-increment:k;position:relative;padding:9px 0 9px 30px;font-size:15.5px;line-height:1.7;color:var(--ink);border-top:1px solid var(--line-2)}
.post__kp li:first-child{border-top:0}
.post__kp li::before{content:counter(k);position:absolute;left:0;top:9px;font-family:var(--serif-en);font-size:18px;color:var(--brand-ink)}

/* 正文 */
.post__body{padding-bottom:24px}
.post__body::after{content:"";display:block;clear:both}
.post__body p{font-size:17px;line-height:1.95;color:var(--ink-2);margin-top:1em}
.post__lead{font-family:var(--serif-cn);font-size:clamp(21px,2vw,26px) !important;line-height:1.6 !important;color:var(--ink) !important;margin-top:48px !important}
.psec::after{content:"";display:block;clear:both}
.post__body h2{display:flex;gap:16px;align-items:baseline;font-size:clamp(25px,2.5vw,33px);line-height:1.35;margin-top:96px;padding-top:30px;border-top:1px solid var(--line);clear:both}
.post__body h2 .num{font-size:.62em;color:var(--brand-ink);flex:none}
.post__body h3{font-size:clamp(19px,1.7vw,22px);margin-top:48px;clear:both}
.post__body h4{font-family:var(--sans);font-size:16.5px;font-weight:600;color:var(--ink);margin-top:30px}
.post__body h2 + p,.post__body h3 + p,.post__body h4 + p{margin-top:.6em}
.post__body h2 + *:not(p){margin-top:28px}
.post__body > section > ul,.post__body ul:not([class]){margin-top:1em;border-top:1px solid var(--line-2)}
.post__body ul:not([class]) li{position:relative;padding:10px 0 10px 22px;border-bottom:1px solid var(--line-2);font-size:16px;line-height:1.75;color:var(--ink-2)}
.post__body ul:not([class]) li::before{content:"";position:absolute;left:2px;top:21px;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.post__body b{color:var(--ink);font-weight:600}
.pull{font-family:var(--serif-cn);font-size:19px !important;line-height:1.75 !important;color:var(--ink) !important;padding:2px 0 2px 20px;border-left:3px solid var(--brand);margin:28px 0 !important}

/* 图：左右排 / 通栏 / 缩略图墙 */
.pfig{margin:0}
.pfig img{width:100%;height:auto;border-radius:4px;background:var(--paper-2);cursor:zoom-in}
.pfig figcaption,.gal figcaption{font-size:13px;line-height:1.6;color:var(--ink-3);margin-top:10px}
.pfig--side{float:right;margin:8px 0 18px 36px}
.pfig--tall{width:36%}
.pfig--square{width:44%}
.pfig--side img{max-height:560px;object-fit:cover;object-position:top}
.pfig--wide{margin:36px 0;clear:both}
.gal{margin:36px 0;clear:both}
.gal__grid{display:grid;grid-template-columns:repeat(var(--cols,3),1fr);gap:10px}
.gal__item{display:block;padding:0;border:0;background:var(--paper-2);border-radius:4px;overflow:hidden;cursor:zoom-in;aspect-ratio:4/3}
.gal--tall .gal__item{aspect-ratio:3/4}
.gal__item img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.gal__item:hover img{transform:scale(1.04)}

/* 卡片类 */
.cards{display:grid;grid-template-columns:repeat(var(--n,2),1fr);gap:14px;margin-top:28px;clear:both}
.cards--2{--n:2}.cards--3{--n:3}
.card{background:var(--white);border-radius:6px;padding:24px 24px 22px}
.card h3{margin:0 0 6px !important;font-size:19px !important}
.card p{font-size:15px !important;line-height:1.75 !important;margin-top:.5em !important}
.card .em{color:var(--ink) !important;font-weight:600}
.card ul:not([class]){border-top:0;margin-top:8px}
.card ul:not([class]) li{font-size:14.5px;padding:6px 0 6px 18px;border-bottom:0}
.card ul:not([class]) li::before{top:16px}
.features{display:grid;grid-template-columns:1fr 1fr;gap:0 32px;margin-top:20px;clear:both}
.feature{border-top:1px solid var(--line);padding:20px 0 22px}
.feature h4{margin:0 !important;font-family:var(--serif-cn) !important;font-weight:600 !important;font-size:18px !important}
.feature p{font-size:15px !important;line-height:1.8 !important;margin-top:.5em !important}
.lvls{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;margin-top:24px;clear:both}
.lvl{background:var(--white);border-radius:6px;padding:20px}
.lvl b{display:block;font-family:var(--serif-cn);font-size:16.5px;line-height:1.45;margin-bottom:12px}
.lvl ul{display:flex;flex-wrap:wrap;gap:6px}
.lvl li,.chips li{font-size:13.5px;line-height:1.4;padding:5px 11px;border-radius:999px;background:var(--brand-tint);color:var(--ink)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chips li{background:var(--white);border:1px solid var(--line)}
.kv{margin-top:20px;border-top:1px solid var(--line);clear:both}
.kv div{display:grid;grid-template-columns:minmax(120px,2fr) 3fr;gap:20px;padding:13px 0;border-bottom:1px solid var(--line-2);font-size:15.5px;line-height:1.65}
.kv dt{font-weight:600;color:var(--ink)}
.kv dd{margin:0;color:var(--ink-2)}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;margin-top:24px;clear:both}
.tiles div{background:var(--white);border-radius:6px;padding:20px}
.tiles b{display:block;font-family:var(--serif-cn);font-size:17px;color:var(--brand-ink)}
.tiles p{font-size:14.5px !important;line-height:1.7 !important;margin-top:6px !important}
.post__faq{margin-top:20px}
.post__faq details > div{padding-bottom:20px}
.post__faq details > div p:first-child{margin-top:0}

/* 学员成长档案 */
.stu{display:grid;grid-template-columns:240px 1fr;margin-top:28px;background:var(--white);border-radius:8px;overflow:hidden;min-height:420px}
.stu__list{border-right:1px solid var(--line-2);padding:10px 0}
.stu__list button{display:block;width:100%;text-align:left;font:inherit;background:none;border:0;border-left:3px solid transparent;padding:13px 20px;cursor:pointer;transition:background .2s}
.stu__list button:hover{background:var(--paper)}
.stu__list button[aria-selected="true"]{background:var(--brand-tint);border-left-color:var(--brand)}
.stu__list b{display:block;font-family:var(--serif-en);font-weight:400;font-size:21px;color:var(--ink);line-height:1.2}
.stu__list span{display:block;font-size:13px;color:var(--ink-3);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stu__panel{padding:32px 36px}
.stu__head{display:flex;gap:18px;align-items:center;padding-bottom:22px;border-bottom:1px solid var(--line-2)}
.stu__head b{display:block;font-family:var(--serif-en);font-weight:400;font-size:30px;color:var(--ink);line-height:1.1}
.stu__head p{margin:6px 0 0 !important;font-family:var(--serif-cn);font-size:17px !important;line-height:1.5 !important;color:var(--forest) !important;font-weight:600}
.stu__steps{margin-top:22px;position:relative}
.stu__steps::before{content:"";position:absolute;left:4px;top:10px;bottom:10px;width:1px;background:var(--line)}
.stu__steps li{position:relative;display:grid;grid-template-columns:88px 1fr;gap:12px;padding:9px 0 9px 24px;font-size:15.5px;line-height:1.6;color:var(--ink)}
.stu__steps li::before{content:"";position:absolute;left:0;top:16px;width:9px;height:9px;border-radius:50%;background:var(--white);border:2px solid var(--brand)}
.stu__steps li:last-child::before{background:var(--brand)}
.stu__steps time{font-size:13.5px;color:var(--ink-3);padding-top:1px}

.post__note{font-size:13.5px;line-height:1.8;color:var(--ink-3);padding:16px 20px;background:var(--paper-2);border-radius:4px;margin-top:56px}
.post__foot{margin-top:28px;padding-top:28px;padding-bottom:72px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.post__foot p{font-size:14.5px;color:var(--ink-3)}
.post__foot p a{color:var(--brand-ink);text-decoration:underline;text-underline-offset:3px}
.guides--3{grid-template-columns:repeat(3,1fr)}

/* 大图浏览 */
.lb{position:fixed;inset:0;z-index:200;background:rgba(14,18,14,.92);display:grid;place-items:center;padding:56px 24px;opacity:0;transition:opacity .25s}
.lb.on{opacity:1}
.lb img{max-width:min(1100px,94vw);max-height:84vh;width:auto;height:auto;border-radius:4px;box-shadow:0 30px 80px rgba(0,0,0,.4)}
.lb p{position:absolute;left:0;right:0;bottom:22px;text-align:center;color:#C9D1CA;font-size:14px}
.lb button{position:absolute;background:rgba(255,255,255,.1);border:0;color:#fff;width:48px;height:48px;border-radius:50%;font-size:22px;cursor:pointer}
.lb button:hover{background:rgba(255,255,255,.22)}
.lb .lb-x{top:18px;right:18px}.lb .lb-p{left:18px;top:50%;transform:translateY(-50%)}.lb .lb-n{right:18px;top:50%;transform:translateY(-50%)}

@media (max-width:1100px){
  .post__hero-in,.post__layout{grid-template-columns:minmax(0,760px)}
  .post__hero-in > *{grid-column:1}
  .post__toc{display:none}
  .post__toc-m{display:block;margin-bottom:20px;background:var(--white);border-radius:6px;padding:4px 20px}
  .post__toc-m summary{cursor:pointer;padding:14px 0;font-size:14.5px;color:var(--ink)}
  .post__toc-m ol{margin-bottom:14px}
}
@media (max-width:900px){.guides--3{grid-template-columns:1fr}}
@media (max-width:700px){
  .post__hero-in{padding-top:28px;padding-bottom:40px}
  .post__layout{padding-top:28px}
  .post__body p{font-size:16.5px}
  .post__body h2{margin-top:72px}
  .pfig--side{float:none;width:auto;margin:24px 0}
  .pfig--tall img{max-height:none;width:72%;margin:0 auto}
  .pfig--tall figcaption{text-align:center}
  .gal__grid{grid-template-columns:repeat(2,1fr)}
  .cards,.features{grid-template-columns:1fr}
  .kv div{grid-template-columns:1fr;gap:2px}
  .stu{grid-template-columns:1fr;min-height:0}
  .stu__list{display:flex;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line-2);padding:0;scrollbar-width:none}
  .stu__list::-webkit-scrollbar{display:none}
  .stu__list button{flex:none;width:auto;border-left:0;border-bottom:3px solid transparent;padding:12px 16px}
  .stu__list button[aria-selected="true"]{border-bottom-color:var(--brand)}
  .stu__list span{display:none}
  .stu__panel{padding:24px 20px}
  .stu__steps li{grid-template-columns:72px 1fr;font-size:15px}
  .lb .lb-p,.lb .lb-n{top:auto;bottom:16px;transform:none}
}
.stu__badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.stu__badge{min-width:108px;padding:14px 16px;border-radius:6px;background:var(--paper)}
.stu__badge span{display:block;font-size:12px;letter-spacing:.08em;color:var(--ink-3)}
.stu__badge b{display:block;font-family:var(--serif-en);font-weight:400;font-size:30px;line-height:1.1;color:var(--ink);margin-top:4px}
.stu__badge:first-child{background:var(--brand-tint)}
.stu__label{font-size:12px !important;letter-spacing:.16em;color:var(--ink-3) !important;margin-top:26px !important}
.stu__steps{margin-top:8px}
.post__body .lvl ul{border-top:0;margin-top:0}
.post__body .lvl ul li{padding:5px 11px;border-bottom:0;font-size:13.5px;line-height:1.4;color:var(--ink)}
.post__body .lvl ul li::before{display:none}