/* TTK FIBERS v2 — หน้าเว็บใหม่
   สี: น้ำเงินกรมท่า (ink) = แบรนด์, ฟ้าแสง (pulse) = สัญญาณไฟเบอร์, ส้ม = ราคา/โปร, เขียว LINE ใช้กับปุ่ม LINE เท่านั้น */
:root{
  --ink:#0b1f4d; --ink2:#132b66; --blue:#1f5eff; --pulse:#3fd0ff; --orange:#ff7a1a; --line-green:#06c755;
  --paper:#f3f6fc; --card:#ffffff; --text:#0f1d3d; --muted:#52607e; --rule:#dbe3f2; --soft:#e7eefb;
  --on-ink:#f2f6ff; --on-ink-mut:#aebde3;
  --f-head:"Kanit","IBM Plex Sans Thai",system-ui,sans-serif; --w-head:600;
  --f-body:"IBM Plex Sans Thai","Noto Sans Thai",system-ui,sans-serif;
  --r-sm:10px; --r-md:16px; --r-lg:26px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#07122e; --card:#0e1d45; --text:#e9efff; --muted:#9fb0d6; --rule:#1d2f63; --soft:#0b1a40; --blue:#5b8cff; color-scheme:dark}}
:root[data-theme="dark"]{--paper:#07122e; --card:#0e1d45; --text:#e9efff; --muted:#9fb0d6; --rule:#1d2f63; --soft:#0b1a40; --blue:#5b8cff; color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--text);font:400 17px/1.7 var(--f-body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3{font-family:var(--f-head);font-weight:var(--w-head);line-height:1.38;margin:0;text-wrap:balance;letter-spacing:0}
p{margin:0}
a{color:inherit}
img,video{max-width:100%;display:block}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px;border-radius:6px}
.wrap{width:min(1180px,100% - 32px);margin-inline:auto}
.skip{position:absolute;left:-999px;top:8px;z-index:100;background:#fff;color:#000;padding:8px 14px;border-radius:8px}
.skip:focus{left:8px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:11px 22px;border-radius:999px;border:2px solid transparent;
  font:600 16px/1.2 var(--f-body);text-decoration:none;cursor:pointer;text-align:center;white-space:nowrap;transition:filter .15s,transform .15s}
.btn:hover{filter:brightness(1.08)}
.btn:active{transform:translateY(1px)}
.btn.sm{min-height:40px;padding:8px 16px;font-size:15px}
.btn.lg{min-height:56px;padding:14px 28px;font-size:18px}
.btn.full{width:100%}
.btn.line{background:var(--line-green);color:#fff}
.btn.blue{background:var(--blue);color:#fff}
.btn.orange{background:var(--orange);color:#fff}
.btn.ghost{border-color:rgba(255,255,255,.45);color:var(--on-ink)}
.btn.ghost:hover{background:rgba(255,255,255,.08)}

/* header */
.bar{position:sticky;top:0;z-index:40;background:var(--ink);color:var(--on-ink);border-bottom:1px solid rgba(255,255,255,.1)}
.bar-in{display:flex;align-items:center;gap:18px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px;font:var(--w-head) 21px/1 var(--f-head);text-decoration:none;white-space:nowrap;letter-spacing:.01em}
.brand svg{width:36px;height:36px;flex:none}
.brand img{height:40px;width:auto}
.menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.menu a{padding:8px 12px;border-radius:8px;text-decoration:none;font-size:15.5px;color:var(--on-ink-mut);white-space:nowrap}
.menu a:hover,.menu a[aria-current]{color:#fff;background:rgba(255,255,255,.08)}
.menu-line{display:none}
.bar-act{display:flex;align-items:center;gap:8px}
.bar-tel{display:flex;align-items:center;gap:6px;color:var(--on-ink);text-decoration:none;font-weight:600;font-size:15px;white-space:nowrap;padding:6px 8px}
.bar-tel svg{width:16px;height:16px}
.icon-btn{width:42px;height:42px;display:grid;place-items:center;border-radius:999px;border:1px solid rgba(255,255,255,.22);background:none;color:var(--on-ink);cursor:pointer;padding:0}
.icon-btn svg{width:18px;height:18px}
.menu-btn{display:none;gap:5px;align-content:center}
.menu-btn span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform .2s}
.menu-btn[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}
@media (max-width:1120px){.bar-tel{display:none}}
@media (max-width:960px){
  .menu{position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;background:var(--ink);padding:8px 16px 18px;border-bottom:1px solid rgba(255,255,255,.12);display:none}
  .menu.open{display:flex}
  .menu a{padding:13px 8px;font-size:17px;border-radius:0;border-bottom:1px solid rgba(255,255,255,.08)}
  .menu-line{display:block;margin-top:12px;text-align:center;background:var(--line-green);color:#fff!important;border-radius:999px!important;border:0!important;font-weight:600}
  .menu-btn{display:grid}
  .bar-act{margin-left:auto}
}
@media (max-width:520px){.bar-line{display:none}.brand{font-size:19px}}

/* hero */
.hx{position:relative;background:var(--ink);color:var(--on-ink);overflow:hidden;isolation:isolate}
.hx::before{content:"";position:absolute;inset:0;z-index:-1;background:
  radial-gradient(700px 420px at 82% 30%,rgba(63,208,255,.16),transparent 65%),
  radial-gradient(600px 420px at 0% 100%,rgba(31,94,255,.35),transparent 70%)}
.hero-media{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.hx.has-media::before{background:linear-gradient(90deg,rgba(11,31,77,.94) 0%,rgba(11,31,77,.78) 42%,rgba(11,31,77,.15) 75%)}
.hero-in{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:40px;align-items:center;padding-block:64px 72px;min-height:min(640px,calc(100svh - 66px))}
.hx.has-media .hero-in{grid-template-columns:minmax(0,640px)}
.hx.has-media.has-reel .hero-in{grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr)}
.hx-reel{margin:0;justify-self:center;width:min(100%,440px,calc((100svh - 110px) * 9 / 16));aspect-ratio:9/16;border-radius:30px;overflow:hidden;background:#06122e;
  border:1px solid rgba(63,208,255,.35);box-shadow:0 0 0 8px rgba(255,255,255,.04),0 30px 80px -30px rgba(63,208,255,.55)}
.hx-reel video{width:100%;height:100%;object-fit:cover}
.hx h1{font-size:clamp(32px,4.6vw,56px);font-weight:var(--w-head);letter-spacing:0;line-height:1.4}
.hx h1 .nw{display:inline-block}
.hero-lead{font-size:clamp(17px,1.6vw,20px);line-height:1.75;color:var(--on-ink-mut);margin-top:18px;max-width:32em}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-facts{list-style:none;padding:0;margin:34px 0 0;display:flex;flex-wrap:wrap;gap:10px}
.hero-facts li{padding:6px 14px;border-radius:999px;border:1px solid rgba(63,208,255,.4);color:#dff6ff;font-size:15px;background:rgba(63,208,255,.07)}

/* tower: จุดเด่นของหน้า — แสงวิ่งขึ้นตึก ไฟห้องติดทีละชั้น */
.tower{margin:0;justify-self:center;width:min(100%,420px)}
.tower svg{width:100%;height:auto;display:block}
.tower figcaption{font-size:14px;color:var(--on-ink-mut);text-align:center;margin-top:6px}
.tower .win{fill:#1b3a80;animation:lite 7s infinite;animation-delay:calc(var(--d) * .38s + var(--c) * .06s + .4s)}
.tower .branch{stroke:#2a4a99;stroke-width:2;fill:none;animation:br 7s infinite;animation-delay:calc(var(--d) * .38s + .3s)}
.tower .riser{stroke:var(--pulse);stroke-width:3;fill:none;stroke-linecap:round}
.tower .riser-glow{stroke:var(--pulse);stroke-width:7;opacity:.35;fill:none}
.tower .pulse{fill:#fff;filter:drop-shadow(0 0 6px var(--pulse));animation:rise 7s infinite cubic-bezier(.45,.05,.55,.95)}
.tower .olt-t{fill:#fff;font:var(--w-head) 13px var(--f-head)}
@keyframes rise{0%{transform:translateY(0);opacity:0}4%{opacity:1}52%{transform:translateY(-392px);opacity:1}58%,100%{transform:translateY(-392px);opacity:0}}
@keyframes lite{0%,4%{fill:#1b3a80}9%,86%{fill:#ffd88a}96%,100%{fill:#1b3a80}}
@keyframes br{0%,4%{stroke:#2a4a99}8%,86%{stroke:var(--pulse)}96%,100%{stroke:#2a4a99}}
@media (prefers-reduced-motion:reduce){
  .tower .win{animation:none;fill:#ffd88a}.tower .branch{animation:none;stroke:var(--pulse)}.tower .pulse{display:none}
}
@media (max-width:860px){
  .hero-in{grid-template-columns:1fr;padding-block:44px 40px;min-height:0;gap:20px}
  .tower{width:min(62%,260px);order:2}
  .hx-reel{order:2;width:100%;max-width:520px;aspect-ratio:4/5;border-radius:24px;margin-top:4px}
  .hx-reel video{object-position:center 40%}
  .tower figcaption{display:none}
}

/* sections */
.sec{padding-block:clamp(56px,8vw,96px)}
.sec-h{font-size:clamp(27px,3.4vw,40px);font-weight:var(--w-head);letter-spacing:0;line-height:1.38}
.sec-top{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:end;gap:12px 40px;margin-bottom:36px}
.sec-lead{color:var(--muted);font-size:17.5px;max-width:34em}
.sec-top .sec-lead{margin:0}

/* compare */
.cmp{background:var(--card);border-bottom:1px solid var(--rule)}
.cmp .sec-h{margin-bottom:28px}
.cmp-tbl{border:1px solid var(--rule);border-radius:var(--r-md);overflow:hidden}
.cmp-row{display:grid;grid-template-columns:1fr 1fr}
.cmp-row>span{padding:18px 24px;font-size:17px}
.cmp-row+.cmp-row{border-top:1px solid var(--rule)}
.cmp-head span{font:var(--w-head) 15px var(--f-head);padding-block:12px;color:var(--muted)}
.cmp-head span:last-child{color:var(--blue)}
.cmp-bad{color:var(--muted);position:relative;padding-left:52px!important}
.cmp-bad::before{content:"";position:absolute;left:22px;top:50%;width:18px;height:18px;margin-top:-9px;border-radius:50%;
  background:#e5484d url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M7 7l10 10M17 7L7 17' stroke='%23fff' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") center/12px no-repeat}
.cmp-good{font-weight:600;background:color-mix(in srgb,var(--blue) 7%,transparent);position:relative;padding-left:52px!important}
.cmp-good::before{content:"";position:absolute;left:22px;top:50%;width:18px;height:18px;margin-top:-9px;border-radius:50%;
  background:var(--blue) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") center/12px no-repeat}
@media (max-width:640px){
  .cmp-head{display:none}
  .cmp-row{grid-template-columns:1fr}
  .cmp-row>span{padding:12px 16px 12px 46px!important;font-size:16px}
  .cmp-bad{padding-bottom:4px!important}
  .cmp-bad::before,.cmp-good::before{left:16px}
}

/* packages */
.pkgs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;align-items:stretch;padding-top:18px}
.pkg{--acc:#1f5eff;position:relative;display:flex;flex-direction:column;background:var(--card);border:2px solid color-mix(in srgb,var(--acc) 35%,var(--rule));
  border-radius:var(--r-lg);padding:28px 22px 22px;box-shadow:0 22px 44px -26px color-mix(in srgb,var(--acc) 55%,transparent),0 2px 6px rgba(11,31,77,.05);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.pkg::before{content:"";position:absolute;left:22px;right:22px;top:-2px;height:4px;border-radius:0 0 6px 6px;background:var(--acc)}
.pkg:nth-child(1){--acc:#22b8f0}.pkg:nth-child(2){--acc:#1f5eff}.pkg:nth-child(4){--acc:#7c5cff}
.pkg:hover{transform:translateY(-8px);border-color:var(--acc);box-shadow:0 30px 60px -28px color-mix(in srgb,var(--acc) 70%,transparent),0 4px 10px rgba(11,31,77,.06)}
.pkg h3{font-size:19px;font-weight:600;color:var(--acc)}
.pkg-speed{margin-top:6px;font-family:var(--f-head);line-height:1;color:var(--text)}
.pkg-speed b{font-size:clamp(44px,4.4vw,56px);font-weight:var(--w-head);letter-spacing:-.03em}
.pkg-speed .up{font-size:22px;font-weight:600;color:var(--muted)}
.pkg-speed .unit{font-size:15px;font-weight:600;color:var(--muted)}
.pkg-price{display:flex;align-items:baseline;gap:6px;margin-top:20px;padding-top:18px;border-top:1px dashed var(--rule)}
.pkg-price b{font:var(--w-head) 38px/1 var(--f-head);color:var(--orange);letter-spacing:-.02em}
.pkg-price span{font-size:15px;color:var(--muted)}
.pkg-note{font-size:14.5px;color:var(--orange);font-weight:600;margin-top:4px}
.pkg-use{margin-top:14px;font-weight:600}
.pkg-list{list-style:none;padding:0;margin:10px 0 22px;display:grid;gap:6px;font-size:15.5px;color:var(--muted)}
.pkg-list li{padding-left:24px;position:relative}
.pkg-list li::before{content:"";position:absolute;left:2px;top:.62em;width:12px;height:6px;border-left:2.5px solid var(--acc);border-bottom:2.5px solid var(--acc);transform:rotate(-45deg)}
.pkg-go{margin-top:auto}

/* แพ็กเกจขายดี: ลอยเด่น ขอบไฟวิ่ง ป้ายเคลื่อนไหว */
@property --ang{syntax:"<angle>";initial-value:0deg;inherits:false}
.pkg.hot{--acc:#ff7a1a;color:var(--on-ink);border:3px solid transparent;z-index:1;
  background:linear-gradient(160deg,#132b66,#0b1f4d 60%) padding-box,
             conic-gradient(from var(--ang),#ff7a1a,#ffd166,#3fd0ff,#1f5eff,#ff7a1a) border-box;
  box-shadow:0 34px 70px -30px rgba(255,122,26,.65),0 0 0 6px rgba(255,122,26,.08);
  transform:translateY(-14px) scale(1.035);animation:pkgSpin 5s linear infinite,pkgFloat 4.5s ease-in-out infinite}
.pkg.hot::before{display:none}
.pkg.hot::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(420px 220px at 80% 0%,rgba(63,208,255,.18),transparent 60%),radial-gradient(300px 200px at 0% 100%,rgba(255,122,26,.16),transparent 60%)}
.pkg.hot:hover{transform:translateY(-20px) scale(1.045);animation-play-state:running,paused}
.pkg.hot>*:not(.pkg-tag){position:relative;z-index:1}
.pkg.hot h3,.pkg.hot .pkg-speed .up,.pkg.hot .pkg-speed .unit,.pkg.hot .pkg-price span,.pkg.hot .pkg-list{color:var(--on-ink-mut)}
.pkg.hot h3{color:#ffb070}
.pkg.hot .pkg-speed{color:#fff}
.pkg.hot .pkg-price{border-color:rgba(255,255,255,.18)}
.pkg.hot .pkg-price b{font-size:44px;color:#ff9a3d;text-shadow:0 0 24px rgba(255,122,26,.45)}
.pkg.hot .pkg-list li::before{border-color:var(--pulse)}
.pkg.hot .pkg-go{box-shadow:0 10px 24px -8px rgba(255,122,26,.7)}
.pkg-tag{position:absolute;top:-17px;left:50%;transform:translateX(-50%);z-index:2;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
  color:#fff;font:700 14.5px/1 var(--f-head);padding:8px 16px 8px 13px;border-radius:999px;overflow:hidden;
  background:linear-gradient(90deg,#ff5f1a,#ff9a3d,#ff5f1a);background-size:200% 100%;
  box-shadow:0 8px 20px -6px rgba(255,95,26,.7);animation:tagShift 3s linear infinite,tagPulse 1.8s ease-in-out infinite,tagGlow 1.8s ease-out infinite}
.pkg-tag svg{width:15px;height:15px;color:#ffe27a;animation:tagStar 2.2s ease-in-out infinite}
.pkg-tag::after{content:"";position:absolute;top:0;bottom:0;width:40%;left:-60%;transform:skewX(-20deg);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.65),transparent);animation:tagShine 2.6s ease-in-out infinite}
@keyframes pkgSpin{to{--ang:360deg}}
@keyframes dockRing{0%{opacity:.8;scale:1}100%{opacity:0;scale:1.55}}
@keyframes pkgFloat{0%,100%{translate:0 0}50%{translate:0 -6px}}
@keyframes tagShift{to{background-position:200% 0}}
@keyframes tagPulse{0%,100%{scale:1}12%{scale:1.14}24%{scale:1}36%{scale:1.09}50%{scale:1}}
@keyframes tagGlow{0%{box-shadow:0 8px 20px -6px rgba(255,95,26,.7),0 0 0 0 rgba(255,122,26,.65)}70%{box-shadow:0 8px 20px -6px rgba(255,95,26,.7),0 0 0 14px rgba(255,122,26,0)}100%{box-shadow:0 8px 20px -6px rgba(255,95,26,.7),0 0 0 0 rgba(255,122,26,0)}}
@keyframes tagStar{0%,100%{rotate:0deg}50%{rotate:18deg}}
@keyframes tagShine{0%,55%{left:-60%}100%{left:130%}}
@media (prefers-reduced-motion:reduce){.pkg.hot,.pkg-tag,.pkg-tag svg,.pkg-tag::after,.dock-line::after{animation:none}.pkg-tag::after{display:none}}
.pkg-foot{margin-top:22px;font-size:14.5px;color:var(--muted)}
@media (max-width:1040px){.pkgs{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:34px}.pkg.hot{transform:translateY(-6px) scale(1.02)}}
@media (max-width:560px){.pkgs{grid-template-columns:1fr}.pkg{padding:26px 20px 20px}.pkg.hot{transform:none;margin-inline:-4px;order:-1}}

/* before / after */
.ba-sec .sec-h{margin-bottom:28px}
.ba{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/9;background:var(--soft)}
.ba img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ba-before{clip-path:inset(0 calc(100% - var(--x)) 0 0)}
.ba input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.ba-handle{position:absolute;top:0;bottom:0;left:var(--x);width:3px;margin-left:-1.5px;background:#fff;pointer-events:none}
.ba-handle::after{content:"";position:absolute;top:50%;left:50%;width:46px;height:46px;margin:-23px 0 0 -23px;border-radius:50%;background:#fff;box-shadow:0 4px 16px rgba(0,0,0,.3);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 6l-5 6 5 6M15 6l5 6-5 6' fill='none' stroke='%230b1f4d' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-size:24px;background-position:center;background-repeat:no-repeat}
.ba input:focus-visible~.ba-handle::after{outline:3px solid var(--orange)}
.ba-lb{position:absolute;top:16px;padding:5px 14px;border-radius:999px;background:rgba(11,31,77,.78);color:#fff;font-weight:600;font-size:15px;pointer-events:none}
.ba-lb.l{left:16px}.ba-lb.r{right:16px}
@media (max-width:640px){.ba{aspect-ratio:4/3}}

/* join steps — ลำดับจริง จึงใช้ตัวเลข */
.join{background:var(--card);border-block:1px solid var(--rule)}
.join-in{display:grid;gap:40px;align-items:center}
.join-in.has-img{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.join .sec-h{margin-bottom:30px}
.jsteps{list-style:none;padding:0;margin:0;counter-reset:st;display:grid;gap:0;max-width:640px}
.jsteps li{counter-increment:st;position:relative;padding:0 0 28px 72px}
.jsteps li::before{content:counter(st);position:absolute;left:0;top:-4px;width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
  background:var(--ink);color:#fff;font:var(--w-head) 21px var(--f-head)}
.jsteps li:not(:last-child)::after{content:"";position:absolute;left:23px;top:48px;bottom:0;width:2px;background:linear-gradient(var(--pulse),var(--blue))}
.jsteps h3{font-size:21px;font-weight:600}
.jsteps p{color:var(--muted);margin-top:4px}
.join-in:not(.has-img) .jsteps{grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;max-width:none}
.join-in:not(.has-img) .jsteps li{padding:68px 0 0}
.join-in:not(.has-img) .jsteps li:not(:last-child)::after{left:60px;right:-20px;top:23px;bottom:auto;width:auto;height:2px;background:linear-gradient(90deg,var(--pulse),var(--blue))}
@media (max-width:760px){
  .join-in:not(.has-img) .jsteps{grid-template-columns:1fr;gap:0}
  .join-in:not(.has-img) .jsteps li{padding:0 0 28px 72px}
  .join-in:not(.has-img) .jsteps li:not(:last-child)::after{left:23px;right:auto;top:48px;bottom:0;width:2px;height:auto;background:linear-gradient(var(--pulse),var(--blue))}
}
.join-img{margin:0}
.join-img{justify-self:center;width:min(100%,460px)}
.join-img img{width:100%;border-radius:var(--r-lg);aspect-ratio:4/5;object-fit:cover;object-position:center 30%}
@media (max-width:860px){.join-in.has-img{grid-template-columns:1fr}}

/* perks */
.perks-sec .sec-h{margin-bottom:30px}
.perks{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.perks li{border-top:3px solid var(--blue);padding-top:16px}
.perks h3{font-size:19px;font-weight:600}
.perks p{color:var(--muted);margin-top:6px;font-size:16px}
@media (max-width:900px){.perks{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.perks{grid-template-columns:1fr;gap:22px}}

/* promo video */
.promo{background:var(--ink);color:var(--on-ink)}
.promo .sec-h{margin-bottom:26px}
.promo-box{border-radius:var(--r-lg);overflow:hidden;background:#000;aspect-ratio:16/9;max-width:980px}
.promo-box video,.promo-box iframe{width:100%;height:100%;border:0;object-fit:contain}

/* referral */
.refer{background:color-mix(in srgb,var(--orange) 12%,var(--paper));border-block:1px solid color-mix(in srgb,var(--orange) 30%,transparent)}
.refer-in{display:flex;align-items:center;gap:22px;padding-block:28px}
.refer svg{width:52px;height:52px;flex:none}
.refer h2{font-size:clamp(21px,2.4vw,27px);font-weight:var(--w-head)}
.refer p{color:var(--muted);margin-top:2px}
.refer .btn{margin-left:auto;flex:none}
@media (max-width:720px){.refer-in{flex-wrap:wrap}.refer .btn{margin-left:0;width:100%}}

/* faq */
.faq-in{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:40px;align-items:start}
.qa details{border-bottom:1px solid var(--rule)}
.qa details:first-child{border-top:1px solid var(--rule)}
.qa summary{cursor:pointer;list-style:none;padding:18px 44px 18px 0;font:600 18px/1.4 var(--f-head);position:relative}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"";position:absolute;right:8px;top:50%;width:11px;height:11px;margin-top:-8px;border-right:2.5px solid var(--blue);border-bottom:2.5px solid var(--blue);transform:rotate(45deg);transition:transform .2s}
.qa details[open] summary::after{transform:rotate(225deg);margin-top:-2px}
.qa details p{padding:0 0 20px;color:var(--muted);max-width:40em}
@media (max-width:820px){.faq-in{grid-template-columns:1fr;gap:20px}}

/* signup */
.signup{background:var(--card);border-top:1px solid var(--rule)}
.su-in{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start}
.su-txt .sec-lead{margin-top:12px}
.su-form{display:grid;grid-template-columns:1fr 1fr;gap:14px 16px;margin-top:28px}
.su-form label{display:grid;gap:6px;font-weight:600;font-size:15px}
.su-form .full{grid-column:1/-1}
.su-form input,.su-form select{font:400 16px var(--f-body);min-height:50px;padding:10px 14px;border-radius:var(--r-sm);border:1.5px solid var(--rule);background:var(--paper);color:var(--text);width:100%}
.su-form input:focus,.su-form select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px color-mix(in srgb,var(--blue) 25%,transparent)}
.su-res{padding:12px 16px;border-radius:var(--r-sm);font-weight:600}
.su-res.ok{background:color-mix(in srgb,var(--line-green) 14%,transparent);color:color-mix(in srgb,var(--line-green) 60%,var(--text))}
.su-res.err{background:color-mix(in srgb,#e5484d 14%,transparent);color:#c42b30}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.qr-card{background:var(--paper);border:3px solid var(--line-green);border-radius:var(--r-lg);overflow:hidden;text-align:center;padding:0 22px 22px;display:grid;justify-items:center;gap:12px}
.qr-top{width:calc(100% + 44px);background:var(--line-green);color:#fff;font:var(--w-head) 18px var(--f-head);padding:12px}
.qr-card img{width:220px;height:220px;object-fit:contain;background:#fff;border-radius:12px;padding:8px}
.qr-empty{width:220px;height:220px;display:grid;place-items:center;border:2px dashed var(--rule);border-radius:12px;color:var(--muted);text-decoration:none;background:#fff}
.qr-id{font:var(--w-head) 21px var(--f-head);color:var(--line-green)}
.qr-tel{font-size:15px;color:var(--muted)}
@media (max-width:760px){.qr-card img,.qr-empty,.qr-top{display:none}.qr-card{padding-top:22px}}
@media (max-width:860px){.su-in{grid-template-columns:1fr}.qr-card{max-width:360px;width:100%;justify-self:center}}
@media (max-width:520px){.su-form{grid-template-columns:1fr}}

/* doors to business / isp */
.split{background:var(--paper)}
.split-in{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.door{display:flex;flex-direction:column;gap:10px;padding:34px 32px;border-radius:var(--r-lg);text-decoration:none;min-height:240px;transition:transform .2s}
.door:hover{transform:translateY(-3px)}
.door h2{font-size:clamp(23px,2.5vw,29px)}
.door p{max-width:30em}
.door-go{margin-top:auto;font-weight:600;display:inline-flex;align-items:center;gap:8px}
.door-go::after{content:"";width:9px;height:9px;border-top:2.5px solid currentColor;border-right:2.5px solid currentColor;transform:rotate(45deg)}
.door.biz{background:var(--ink2);color:var(--on-ink)}
.door.biz p{color:var(--on-ink-mut)}
.door.isp{background:var(--card);border:1px solid var(--rule)}
.door.isp p{color:var(--muted)}
.door.isp .door-go{color:var(--blue)}
@media (max-width:760px){.split-in{grid-template-columns:1fr}.door{min-height:0;padding:28px 24px}}

/* floating contact (mobile) */
.dock{display:none}
@media (max-width:760px){
  .dock{display:flex;flex-direction:column;gap:12px;position:fixed;right:14px;bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:35}
  .dock a{display:grid;place-items:center;width:56px;height:56px;border-radius:50%;text-decoration:none;box-shadow:0 8px 22px rgba(0,0,0,.28);transition:transform .15s}
  .dock a:active{transform:scale(.92)}
  .dock-line{background:var(--line-green);position:relative}
  .dock-line::after{content:"";position:absolute;inset:0;border-radius:50%;border:2px solid var(--line-green);animation:dockRing 2.4s ease-out infinite}
  .dock-line svg{width:34px;height:34px}
  .dock-tel{background:var(--orange);color:#fff}
  .dock-tel svg{width:24px;height:24px}
  .ft{padding-bottom:24px}
  .ft{padding-bottom:80px}
}

/* footer */
.ft{background:var(--ink);color:var(--on-ink-mut);padding-top:56px;font-size:15.5px}
.ft-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.ft .brand{color:#fff;margin-bottom:14px}
.ft-brand p{max-width:28em}
.ft-soc{display:flex;gap:14px;margin-top:14px}
.ft-soc a{color:#fff}
.ft-col{display:flex;flex-direction:column;gap:8px}
.ft-col h2{font-size:16px;color:#fff;margin-bottom:4px}
.ft-col a{text-decoration:none}
.ft-col a:hover{color:#fff;text-decoration:underline}
.ft-bar{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-block:20px;font-size:14px}
@media (max-width:860px){.ft-grid{grid-template-columns:1fr 1fr}.ft-brand{grid-column:1/-1}}
@media (max-width:480px){.ft-grid{grid-template-columns:1fr}}

/* lightbox */
#lightbox{border:0;padding:0;background:transparent;max-width:96vw;max-height:94vh}
#lightbox::backdrop{background:rgba(3,10,30,.85)}
#lightbox img{max-width:96vw;max-height:90vh;border-radius:10px}
#lbClose{position:fixed;top:14px;right:14px;width:44px;height:44px;border-radius:50%;border:0;background:#fff;color:#000;font-size:18px;cursor:pointer}

/* หน้าเดิม (ธุรกิจ / NOC): เปลี่ยนสีและฟอนต์ให้เข้ากับเว็บใหม่ */
.legacy{--font-display:var(--f-head);--font-body:var(--f-body);--accent:#1f5eff;--signal:#ff7a1a;--pulse:#3fd0ff;--hero-bg:#0b1f4d;--hero-text:#f2f6ff;--hero-muted:#aebde3;
  --bg:var(--paper);--surface:var(--card);--surface2:var(--soft);--line:var(--rule)}
:root[data-theme="dark"] .legacy{--accent:#5b8cff;--accent-ink:#07122e}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .legacy{--accent:#5b8cff;--accent-ink:#07122e}}
.legacy .btn.primary{background:var(--orange);color:#fff}
.legacy-noc>section.s:first-child{padding-top:56px}
.legacy .wrap{width:auto}
.bar .wrap,.ft .wrap{padding-inline:0}
[hidden]{display:none!important}

/* เพื่อนผู้แนะนำ */
.ref-box{display:grid;gap:6px;padding:16px;border-radius:var(--r-md);background:color-mix(in srgb,var(--orange) 8%,var(--paper));border:1px dashed color-mix(in srgb,var(--orange) 45%,transparent)}
.ref-box>label{font-weight:600;font-size:15px}
.ref-row{display:flex;gap:8px}
.ref-row input{flex:1;min-width:0}
.ref-btn{background:var(--ink);color:#fff;min-height:50px;border-radius:var(--r-sm)}
.ref-res{font-weight:600;font-size:15.5px;display:flex;align-items:center;gap:8px}
.ref-res.ok{color:#079a45}
.ref-res.ok::before,.ref-res.no::before{content:"";flex:none;width:22px;height:22px;border-radius:50%;background-position:center;background-repeat:no-repeat;background-size:14px}
.ref-res.ok::before{background-color:#06c755;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5' fill='none' stroke='%23fff' stroke-width='3.2' stroke-linecap='round'/%3E%3C/svg%3E")}
.ref-res.no{color:#d93036}
.ref-res.no::before{background-color:#e5484d;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M7 7l10 10M17 7L7 17' stroke='%23fff' stroke-width='3.2' stroke-linecap='round'/%3E%3C/svg%3E")}
.ref-res.wait{color:var(--muted)}
.ref-hint{font-size:14px;color:var(--muted)}